SIST EN 1406:2009
(Main)Chemicals used for treatment of water intended for human consumption - Modified starches
Chemicals used for treatment of water intended for human consumption - Modified starches
This European Standard is applicable to modified starches used for treatment of water intended for human consumption. It describes the characteristics of modified starches and specifies the requirements and the corresponding test methods for modified starches.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Modifizierte Stärke
Diese Europäische Norm gilt für modifizierte Stärke zur Aufbereitung von Wasser für den menschlichen Gebrauch. Sie beschreibt die Eigenschaften von modifizierter Stärke und legt die Anforderungen sowie die entsprechenden Prüfverfahren für modifizierte Stärke fest.
Produits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Amidons modifiés
La présente Norme européenne est applicable aux amidons modifiés utilisés pour le traitement de l'eau destinée à la consommation humaine. Elle décrit les caractéristiques et spécifie les prescriptions et les méthodes d'essai correspondantes pour les amidons modifiés.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Modificirani škrobi
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Modificirani škrobiProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Modifizierte StärkeProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Amidons modifiésChemicals used for treatment of water intended for human consumption - Modified starches71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 1406:2009SIST EN 1406:2009en,fr,de01-december-2009SIST EN 1406:2009SLOVENSKI
STANDARDSIST EN 1406:19991DGRPHãþD
SIST EN 1406:2009
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1406
August 2009 ICS 71.100.80 Supersedes EN 1406:1998English Version
Chemicals used for treatment of water intended for human consumption - Modified starches
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Amidon modifié
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Modifizierte Stärke This European Standard was approved by CEN on 24 July 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1406:2009: ESIST EN 1406:2009
EN 1406:2009 (E) 2 Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Description .5 3.1 Identification .5 3.2 Commercial form .7 3.3 Physical properties .7 3.4 Chemical properties .8 4 Purity criteria .8 4.1 General .8 4.2 Composition of commercial product .8 4.3 Impurities and main by-products .9 4.4 Chemical Parameters .9 5 Test methods .9 5.1 Sampling .9 5.2 Analyses .9 6 Labelling - Transportation - Storage . 10 6.1 Means of delivery . 10 6.2 Risk and safety labelling in accordance with the EU Directives . 11 6.3 Transportation regulations and labelling . 11 6.4 Marking . 11 6.5 Storage . 11 Annex A (informative)
General information on modified starches . 12 A.1 Origin . 12 A.2 Use . 12 A.3 Rules for safe handling and use . 13 A.4 Emergency procedures . 13 Bibliography . 15
SIST EN 1406:2009
EN 1406:2009 (E) 3 Foreword This document (EN 1406:2009) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2010, and conflicting national standards shall be withdrawn at the latest by February 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1406:1998. Annex A is informative and gives some information on origin, use and handling of modified starches. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 1406:2009
EN 1406:2009 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard: 1) This standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; 2) It should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. NOTE Conformity with this standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control by National Authorities. SIST EN 1406:2009
EN 1406:2009 (E) 5 1 Scope This European Standard is applicable to modified starches used for treatment of water intended for human consumption. It describes the characteristics of modified starches and specifies the requirements and the corresponding test methods for modified starches. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696:1987). ISO 1666, Starch — Determination of moisture content — Oven-drying method. ISO 3165, Sampling of chemical products for industrial use — Safety in sampling. ISO 5377, Starch hydrolysis products — Determination of reducing power and dextrose equivalent — Lane and Eynon constant titre method. ISO 6206, Chemical products for industrial use — Sampling — Vocabulary. ISO 8213, Chemical products for industrial use — Sampling techniques — Solid chemical products in the form of particles varying from powders to coarse lumps. 3 Description 3.1 Identification 3.1.1 Chemical names Chemical names of typical modified starches are listed: a) non-ionic starch: poly-D-glucose; b) cationic starch: starch 2-hydroxy-3-(trimethylamino) propylether, chloride; c) anionic starch: starch carboxymethyl ether, sodium salt. Other modified starches may be used. 3.1.2 Synonyms or common names a) starch; b) modified starch; c) starch flocculants. 3.1.3 Relative molecular mass Undegraded potato starch derivatives: typically in the range of 106 to 108. SIST EN 1406:2009
EN 1406:2009 (E) 6 3.1.4 Empirical formulae Empirical formulae for typical modified starches are: a) non-ionic starch: (C6H10O5) n ; b) cationic starch: [(C6H10O5)(C12H24ONCl)0,035-0,7]n' ; c) anionic starch: [(C6H10O5) (C8H11O7Na) 0,113] n". 3.1.5 Chemical formulae Chemical formulae for typical modified starches are: Non-ionic starch:
Cationic starch:
Anionic starch:
SIST EN 1406:2009
EN 1406:2009 (E) 7 3.1.6 CAS Registry Numbers1) a) non-ionic starch: 9005-25-8; b) cationic starch: 56780-58-6; c) anionic starch: 9063-38-1. 3.1.7 EINECS reference2) Non-ionic starch has the following EINECS number: 232-679-6. Modified starches are exempt from EINECS registration providing the reactants used to carry out the modification are EINECS registered. 3.2 Commercial form Modified starches as specified in this standard are available as solids containing a small amount of residual moisture or as aqueous solutions. 3.3 Physical properties 3.3.1 Appearance Modified starches are white to pale yellow solids in the form of granule, flake or powder or white to yellowish viscous aqueous solutions. 3.3.2 Density The bulk densities are as follows: a) starch powders: 0,4 – 0,7 kg/dm3; b) aqueous solution: 1,0 – 1,2 kg/dm3. 3.3.3 Solubility The products are soluble in hot or cold water. Their solubility is limited only by viscosity. Typically, anionic starch is soluble to a concentration of 6 % mass fraction, cationic starch to 8 % mass fraction and non-ionic starch to 13 % mass fraction, all in cold water. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa Not applicable. 3.3.6 Melting point Not applicable.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 1406:2009
EN 1406:2009 (E) 8 3.3.7 Specific heat Not applicable. 3.3.8 Viscosity, dynamic Not applicable. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Starch and starch derivatives are non-hazardous materials and not intrinsically reactive. However, in common with many other organic compounds, a strong exothermic reaction will occur if they are brought into contact in the dry state with a strong oxidizing agent or str
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